r,f, ART. 2. S. VOSHIWAKA: 



jiiid is 1] inik'Ri long und ;i mile wide. T\n- hiulicst point rises 270 

 ft. uljove the sea-level. Mr. Kiiroiwa lias found the island to Ije of an 

 aofoflonierate-tiiff of andésite. 



Co 



VII. UNINHABITED ISLANDS LYING TO THE NOh'TH oP FORMOSA. 



There are three islands scattered at a distance from '20 to oO 

 miles north-east of Kelung (Kiiriin) in Formosa. The most southern 

 is called Agincourt (Hökwatö) (lat. 25"38'X, long. \'2'2°5'i E), and 

 has, according to "the China Sea Directory," a round summit, 540 ft. 

 hio-h, stretchinu' out into liiiih bold headlands on the north and south. 

 All the eastern side is very steep, tlie western is less so. Pieces of 

 rocks composing the island lune been collected and sent to me by Mr. 

 Osumi. ]\y the determination of Prof. Koto, they are fjund to be 

 hyperstheiie-basalt and hypersthene-andesite. The (Jrag (Menkwatö) 

 (lat. 25' 20' X and long. 122°7'E) lies [) miles SSE from Agincourt; 

 and is, according to Mr. Saito,* elongated X^-S, with a length of 1640 

 ft. and a width of 084 ft. The coast generally has steep cliffs. The 

 highest point is in the eastern part of the island and readies the height 

 of ISO ft. al)ove the seadevel. The whole island is entirely composed 

 of neovolcanic rocks. The volcanic centre is now invisible, but it was 

 probably situated on the east of the highest peak, liasaltic andésite 

 was first ei'upted, and tVien a small amount of volcanic ash and breccia 

 deposited u])on its sheet. Dykes of the same composition were finally 

 erupted througii these rocks. The southernmost island, the Pinnacle 

 (Kwaheitö), lies XE bv X of the entrance of Kelung harbour and at a 

 distance of 19 miles from it. that is in lat. 25°2()'X and long. 121° 

 57'E. It is a rugged mass of rock, 170 ft. high, with perpendicular 



* SFli't'MAâ^âîRA (Report (.11 a Trip to the uuinhal.itecl Islaiuls lying- off the Coast 

 of K'iirim, liiuo., in ■hipiDU-xc). 



